Objective To explore the traumatic situation and transfer methods of the in-patients injured in Lushan Earthquake, and to provide evidence for treating injured mass in future. Methods The information of the patients injured in Lushan Earthquake who were admitted in Chengdu Military General Hospital were collected by “No. 1 Military Medical Project” hospital information system and a self-edited “Questionnaire for Hospitalized Patients Injured in 4.20 Lushan Earthquake”. Results A total of 65 patients were admitted in this hospital: 63 (96.92%) patients were injured in the main shock; 28 (43.08%) patients were injured by building collapse; 23 (35.38%) patients got injured due to falls or got bruised when escaping; and 14 (21.54%) patients were accidentally injured. Rescue methods: 32 (49.23%) patients were saved by themselves; 23 (35.38%) patients were mutually helped; 10 (15.38%) patients were rescued by local non-military rescue team; 34 (52.31%) patients were rescued by military rescue teams; and 26 (44.83%) patients were transferred by air transport. Conclusion In order to cope with emergencies and major disasters (e.g. earthquake) and to treat injured mass scientifically in the future, we should set up emergency wards scientifically and reasonably, carry out education on earthquake prevention and disaster mitigation widely, reinforce self-care and mutual aid in the stricken area, quickly send rescue and medical teams, and organize training for air transportation of patients.
A novel structural dynamics test method and device were designed to test the biomechanical effects of dynamic axial loading on knee cartilage and meniscus. Firstly, the maximum acceleration signal-to-noise ratio of the experimental device was calculated by applying axial dynamic load to the experimental device under unloaded condition with different force hammers. Then the experimental samples were divided into non-specimen group (no specimen loaded), sham specimen group (loaded with polypropylene samples) and bovine knee joint specimen group (loaded with bovine knee joint samples) for testing. The test results show that the experimental device and method can provide stable axial dynamic load, and the experimental results have good repeatability. The final results confirm that the dynamic characteristics of experimental samples can be distinguished effectively by this device. The experimental method proposed in this study provides a new way to further study the biomechanical mechanism of knee joint structural response under axial dynamic load.
Objective To explore the number variation trend of inpatients with traumatic brain injury (TBI) in high altitude and plain areas. Methods The first page information in medical records of TBI patients, who were admitted to military hospitals from 2001 to 2007, was searched and extracted from the Chinese Trauma Database. Two military hospitals in high altitude area and another two in the same hospital level in plain area were selected. Then, the number variation trend of TBI inpatients in those two areas was compared. Results In high altitude area, the proportion of male patients and their median inpatient days were higher, while the age, proportion of Han patients and surgery rate were lower than those in plain area (all Plt;0.001). During 2001-2007, there were 9 141 TBI patients discharged from the four hospitals, and the average annual growth rate was 13.15%. In high altitude area, the average annual growth rate of discharged inpatients was 24.00%, while in plain area, it was just 7.09%. The 4 common categories of TBI were intracranial injury, open wound of the head, neck and trunk, skull fracture, and other injuries. Conclusion Compared with the plain area, there are significant differences in the demographics, hospital stay and surgery of inpatients in high altitude area. The average annual growth rate of TBI inpatients discharged from hospitals in high altitude area is faster than that in plain area, to which should be paid attention by relevant departments.